Patent US3913584A successfully refreshed from Google Patents.
US2562069A
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Sound-actuated lamp indicator for telephones
Assignee: SHERR
•
Filing: 1949-05-02
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Granted: 1951-07-24
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Expires: 1969-05-02
Abstract
No abstract record available.
Inventors
- 👤 Harold M Stein
- 👤 Carl M Sherr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:34
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H04M19/04; H04M1/00; H04M1/02; H04M1/22
Claims Analysis
Total Claims: 0
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FR832462A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |